[gregbradley]

I damaged a 5nm Ha some time ago and am in the process of servicing my gear and fixing up little defects that have built up.

So I am about to replace the filter.

I am using an F7 to F5.6 refractor or CDK17 at F6.8 or F4.5 is the switch to 3nm worth the extra cost?

Same with O111.

Greg.